Where do we get this tradition of the 40 Days of Repentance

News Letter 5849-027 9th day of the 6th month 5849 years after the creation of Adam The 6th Month in the Fourth year of the third Sabbatical Cycle The Third Sabbatical Cycle of the 119th Jubilee Cycle The Sabbatical Cycle of Earthquakes Famines, and Pestilences  ...